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| #!/bin/python3 | |
| import math | |
| import os | |
| import random | |
| import re | |
| import sys | |
| # | |
| # Complete the 'countingValleys' function below. |
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| #!/bin/python3 | |
| import math | |
| import os | |
| import random | |
| import re | |
| import sys | |
| from collections import Counter | |
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| """ | |
| 5,7,7,8,8,10 | |
| n = 6 | |
| first = 0 | |
| last = 6 | |
| mid = 0 + 6 // 2 = 3 | |
| nums[mid] == 8 ? | |
| """ |
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| def binarySearch(nums, target, first, last): | |
| while first <= last: | |
| mid = first + (last - first) // 2 | |
| if nums[mid] == target: | |
| return mid | |
| elif nums[mid] > target: | |
| last = mid - 1 | |
| else: |
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| class MyQueue(object): | |
| def __init__(self): | |
| self.stack1 = [] | |
| self.stack2 = [] | |
| def peek(self): | |
| if not self.stack2: | |
| while self.stack1: | |
| self.stack2.append(self.stack1.pop()) | |
| return self.stack2[-1] |
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| def primality(n): | |
| if n == 2: | |
| return "Prime" | |
| if n < 2 or n % 2 == 0: | |
| return "Not prime" | |
| limit = int(math.sqrt(n)+ 1) | |
| for i in range(3,limit, 2): |
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| def removeDuplicates(self, nums: List[int]) -> int: | |
| k = 0 | |
| n = len(nums) | |
| for i in range(1, n): | |
| if nums[i] != nums[i - 1]: | |
| nums[k] = nums[i - 1] | |
| k += 1 | |
| nums[k] = nums[n - 1] | |
| k += 1 | |
| return k |
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| def maxSubArray(self, nums: List[int]) -> int: | |
| """ | |
| -2,1,-3,4,-1,2,1,-5,4 | |
| l = -2 | |
| c = 1 | |
| l = 1 | |
| c = 1 - 3 = -2 | |
| c = 0 | |
| c = 4 |
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| class Solution: | |
| """ | |
| 6,5,3,0-2-3 | |
| """ | |
| def maxp3(self, A): | |
| A.sort(reverse=True) | |
| n = len(A) | |
| return max(A[0] * A[1] * A[2], A[n-1] * A[n-2]* A[0]) |
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| class Solution: | |
| # @param A : tuple of integers | |
| # @return an integer | |
| def maximumGap(self, A): | |
| n = len(A) | |
| nums = [] | |
| for item in enumerate(A): | |
| nums.append(item) |
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